“Improving Defensive Skills Through Man-to-Man Marking and Zone Defense in Futsal Games”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 18, no. 2 (May 31, 2026): 3928–3935. Accessed June 3, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/903.